Does this timing advance look right?

[oragex]

Just got a few engine parameters while driving, I wonder if the timing advance makes sense? I get pinging under heavier acceleration in lower gear, the fuel may be for something (87) but I wonder if there may be something else

https://www.youtube.com/watch?v=lSEzmLqzGKQ


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[Clan]

Originally Posted by oragex

Just got a few engine parameters while driving, I wonder if the timing advance makes sense? I get pinging under heavier acceleration in lower gear, the fuel may be for something (87) but I wonder if there may be something else

https://www.youtube.com/watch?v=lSEzmLqzGKQ


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timing is reasonable but 5 psi of boost pressure at idle is wrong , should be about zero or even slightly negative pressure depending where the sensor is .
what is boost with engine stopped ? should show atmospheric .

[100K+]

Originally Posted by Clan

timing is reasonable but 5 psi of boost pressure at idle is wrong , should be about zero or even slightly negative pressure depending where the sensor is .
what is boost with engine stopped ? should show atmospheric .

Would have thought the boost pressure would be blank - its a non turbo?? or is this me having another senior moment ... If so.. Sorry Clan.

But if one bit of the information is incorrect ( should be no boost) how does that affect the credibility of the other information given???
I would not trust it.

Cheers
Bob

[cheshired5]

Originally Posted by 100K+

Would have thought the boost pressure would be blank - its a non turbo??

It's technically a MAP sensor rather than a boost sensor so will show atmospheric pressure with engine off, ignition on regardless of the type of engine.

Once the engine is idling, a turbo would continue to show roughly atmospheric pressure and that positive pressure would rise when the accelerator is pressed whereas a non turbo would show a vacuum at idle and the vacuum would increase when the accelerator was pressed.

[davebb]

Originally Posted by cheshired5

It's technically a MAP sensor rather than a boost sensor so will show atmospheric pressure with engine off, ignition on regardless of the type of engine.

Once the engine is idling, a turbo would continue to show roughly atmospheric pressure and that positive pressure would rise when the accelerator is pressed whereas a non turbo would show a vacuum at idle and the vacuum would increase when the accelerator was pressed.

vacuum would decrease if accelerator was pressed, if sensor is in the manifold , as there is no vacuum with the throttle valve open,

but I think he is reading vacuum as 5psi is 344.738milibar , it is map/manifold , not BOOST pressure
atmospheric pressure is 1 bar about 14.65psi.
Dave

[oragex]

It's a non turbo. I only have the MAP sensor. I'll try to connect Torque again to read the pressure with the engine off.

[davebb]

Originally Posted by oragex

It's a non turbo. I only have the MAP sensor. I'll try to connect Torque again to read the pressure with the engine off.

Hi if you go into the settings/units , there you can change what it will read as,
Dave

[oragex]

It's too late now, I finally thrown away the ELM327, fed up with connection issues. Problem fixed

[davebb]

Hi
I use a vgate one and it works very well,
Dave

[oragex]

Mine was also vgate until it hit the concrete Some work fine but these are cheap made and many had issues connecting. I guess electric components get worn inside.